Google Authenticator app for Android, iPhone iOS & Blackberry allows you to protect your Google account from hijacking. Just enable 2-step verification to protect Gmail account, Orkut account and any other Google account. Google Authenticator generates 2-step verification codes on your phone. The app simply generates a code in addition to your password. So you have to put the verification code along with password during signing in to your account.

Google Authenticator app Features

Automatic setup via QR code

Support for multiple accounts

Support for multiple languages

Just give a look to the below video tutorial, it shows how to use Google Authenticator app and how to enable 2-step verification on your Google Account. You have to enable 2-step verification on your Google Account by visiting your account settings page. So now no-one can hack your Google account. So is not it a great app. So enjoy with Google Authenticator Apps and always be safe. The Google Authenticator Apps is available for Android, iPhone iOS & Blackberry devices.